Effect of Salinity Stress on Growth, Sugar Content, Pigments and Enzyme Activity of Rice

Amirjani, Mohammad Reza

doi:10.3923/ijb.2011.73.81

Cited by 200 publications

(121 citation statements)

References 32 publications

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“…Imposition of salt stress during early growth period, rice faces osmotic stress, and decrease leaf growth, while during long-term salt stress, rice plants experience (Na + and Cl -) ionic stress, and lead to early senescence of older leaves and photosynthetic area (Amirjani, 2011). Salt stress inhibits rice plant growth, such as decreasing net CO2 assimilation rate, leaf growth, leaf cell enlargement, DM accumulation (Amirjani, 2010).…”

Section: Discussionmentioning

confidence: 99%

Sodium chloride stress during early growth stages altered physiological and growth characteristics of rice

Hussain

Cao

Zhong

et al. 2018

Chil. j. agric. res.

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The salt stress affects plant growth and physiological characteristics during early growth stages in rice (Oryza sativa L.) The objective of this study was to examine the influence of salt stress on rice growth during early stages and to find out their salt tolerance levels. A pot culture experiment was conducted in rice cropping season 2016, with completely randomized design (CRD) and three replicates. The treatments were two rice cultivars, 'Liangyoupeijiu' (LYP9) and 'Nipponbare' (NPBA) with four salt stress levels 0 (control, CK), 1.5 (low salt stress, LS), 4.5 (medium salt stress, MS), and 7.5 g (heavy salt stress, HS) NaCl kg -1 soil at different growth stages with six seedlings per pot. About 15 parameters were recorded and most of the treatments were significantly different (P ≤ 0.05) from each other. The results showed that salt stress reduced seed emergence characteristics of the rice. It also decreased photosynthetic parameters, growth characteristics including DM, and seedling height reduction increased at early seedling and maximum tillering stage in both rice cultivars but this disaster is less in 'LYP9' than 'NPBA'. On the basis of DM reduction, 'LYP9' was categorized as moderately susceptible (MS) and susceptible (S) at HS during early growth stage, and 'NPBA' was categorized as sensitive to the HS stress level. The result suggested that 'LYP9' showed somehow resistance under salt stress than 'NPBA'. This study will help us to provide new ideas for improving the high yielding rice cultivar (LYP9) to salt tolerance by genetic modification and cultivation techniques.

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Section: Discussionmentioning

confidence: 99%

Sodium chloride stress during early growth stages altered physiological and growth characteristics of rice

Hussain

Cao

Zhong

et al. 2018

Chil. j. agric. res.

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“…Soluble sugars and starch has been observed to serve as an osmoticum in a number of plants as a response to salinity [79,80]. An increase in sugar content in shoots has been reported by [81] and also an increased starch content in roots been showed in the roots of rice which contributes to the osmotic adjustment to the crop exposed to salinity by maximizing sufficient storage reserves to prop up the primary metabolism [82,83].…”

Section: Response At the Biochemical Levelmentioning

confidence: 99%

Response of Rice under Salinity Stress: A Review Update

Ghosh¹,

Ali²,

Gantait³

2016

J Rice Res

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Salinity has been a key abiotic constraint devastating crop production worldwide. Attempts in understanding salt tolerance mechanisms has revealed several key enzymes and altered biochemical pathways inferring resistance to crop plants against salt stress. The past decades have witnessed extensive research in development of salt tolerant cultivars via conventional means, improvised by modern era molecular tools and techniques. Rice (Oryza sativa L) is the staple food crop across several countries worldwide. Being a glycophyte by nature, its growth is severely imparted in presence of excess salt. Rice is susceptible to salinity specifically at the early vegetative and later reproductive stages and the response of the crop to excessive salt toxicity at biochemical and molecular level as well as physiological level is well studied and documented. An understanding of the specific response of rice to ion accumulation at the toxic level can aid in identifying the key factors responsible for retarded growth and limited production of rice with the future scope of mitigating the same. The present review summarizes the differential responses of rice, in particular, to salt toxicity enumerating the detailed morphological, physiological, biochemical and molecular changes occurring in the plant. An attempt to explain salinity tolerance and its future scope and implications in screening for salt tolerance has also been elucidated in the present study.

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“…Although Bangladesh is now on the verge of attaining self sufficiency in cereal production, there is still a large gap between the production and demand. Today, rice has special position as a source of providing over 75% of Asian population and more than three billion of world population's meal which represents 50 to 80% of their daily calorie intake (Khush, 2005;Amirjani, 2011). Thus, there is need to produce more rice per unit area per unit time.…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity analysis of parental lines for hybrid development in rice (Oryza sativa L.)

Hasan

Kulsum

Rahman

et al. 2013

Bangladesh J. Agric. Res

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Genetic divergence of 40 parental lines comprising 30 restorer and 10 maintainer lines were studied through Mohalanobis's D 2 and principal component analysis for eleven characters. Genotypes were grouped into five different clusters. Cluster V comprised maximum number of genotypes (thirteen) followed by cluster I and II. The inter-cluster distance was maximum between clusters I and V (13.495) indicating wide genetic diversity between these two clusters followed by the distance between cluster I and 11 (9.489), cluster IV, and cluster V (8.969) and cluster I and cluster III (8.039). The minimum inter-cluster distance was observed between cluster II and cluster III (3.034) followed by cluster 111 and cluster IV (3.834) and cluster II and cluster V (4.945) indicating that the genotypes of these clusters were genetically close. The intra cluster distance in the entire five clusters was more or less low which indicated that the genotypes within the same cluster were closely related. Among the characters panicle weight contributed most for divergence in the studied parental lines. Difference in cluster means existed for almost all the characters studied. Highest mean value for number of effective tillers (7.8), days to 50% flowering (95.5), panicles/m 2 (192.6), panicle weight (2.9), spikelet fertility (84.8), number of grains/panicle (177.8), days to maturity (123.6), and grain yield/plot (1065.5) were observed in cluster I indicated the parental lines fallen in this cluster having the genetic potentiality to contribute better for yield maximization of hybrid rice.

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Effect of Salinity Stress on Growth, Sugar Content, Pigments and Enzyme Activity of Rice

Cited by 200 publications

References 32 publications

Sodium chloride stress during early growth stages altered physiological and growth characteristics of rice

Sodium chloride stress during early growth stages altered physiological and growth characteristics of rice

Response of Rice under Salinity Stress: A Review Update

Genetic diversity analysis of parental lines for hybrid development in rice (Oryza sativa L.)

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